Has someone recently gone out of their way to do something nice for you? Signal your gratitude with a thank you plant that conveys your heartfelt appreciation. Plant gifts are perfect for all occasions, from thanking an attentive hostess to a friend who helped you out. Regardless of the good deed, plants always make for a great thank you gift. Choose an easily maintained cactus garden or a gorgeous flowering plant, like a hibiscus or gardenia. Bamboo and bonsai trees are also classic plant gifts that are sure to leave a lasting impression.